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Finding the Fourth Proportional to 117,457.47, 162,092.50 and 63,742.95

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Solution

The fourth proportional to 117,457.47, 162,092.50 and 63,742.95 is: 87,965.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,457.47 : 162,092.50 = 63,742.95 : x
  2. Step 2: Convert to fraction form
    117,457.47/162,092.50 = 63,742.95/x
  3. Step 3: Cross multiply
    117,457.47x = 162,092.50 × 63,742.95
  4. Step 4: Simplify right side
    117,457.47x = 10,332,253,963.52
  5. Step 5: Solve for x
    x = 10,332,253,963.52/117,457.47
  6. Step 6: Final answer
    x = 87,965.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.